Manufacture, centrifugally, of hollow articles.



DJI/10H2 (Q H. BUCHANAN MANUFACIUHE, CENTRlFuGALLv, 0F HOLIUW ,IR-HOLES.

APPLICATION FILED FEB. l2, 1916.

Patented Apr. 24, 1917.

3 SHEETS-SHEET l.

D. IVIOIR & H. BUCHANAN.

MANUFACTURE, CENTRIFUGALLY, 0F HOLLOW ARTICLES.

atented Apr. 24, 1917.

APPLICATION FILED FEB. I2, I9l6.

3 SHEETS-SHEET 2.

:IIII

III IIIII P'anfd Apr. 24,1917..

3 SHEETS-SHEET 3.

D. IVIOIR & H. BUCHANAN.

MANUFACTURE, CE'NTRIFUGALLY, 0F HOLLOW ARTICLES.

r n APPLICATION FILED FEB.12|L9|6 yes l so

nouann More ann Hue encuentran, nosanroinn saura MNUFACTURE, CENTRIUGALLY, 0F EGLLW JR'LES.

nppueauoa ala February ie, rete. sensu ne. raars.

To all wwm t may cor/wcm:

Be it known that We, DONALD More and HUGH BUCHANAN, subjects of the King of Great Britain and Ireland, residing at Rosario de Santa F, Argentina, have invented Improvements Relating to the-Manufacture, Centrifugally, -of Hollow Articles, of which Athe following is ay specification.

rlhis invention relates to a process of man` ufacturing articles, centrifugally, such for examples-as concrete pipes and other hollovv Ware having smooth internal surfaces. f

ln such processes proposals have been I made accordlng to which materiahsuch for example as cement or lime concrete or other suitable agglomerate intended to be subected to centrifugal action, is to be received y a configuring member confinedl Within outer inclosing' means designed to resist the bursting stresses to which the inner conigur- Speciication of Letters Patent.

mg member is .to be subject, such con-' guring member being designed to be removed as soon as the material has been suf-l ciently actedy upon by centrifugal force.

rlhe present invention which is applicable, Whetherthe smooth internal surfaces are to be the nal sta e of articles made throughout by a centri gal method of production,

or the linings, produced'centrifugall of articles made in any other way, consists in a process of the Vkind specied :whereby the material to be formed into a'surfaced article is y introduced into an innery configuring member, which may be one or a number having a variety of forms diering Widely from' that of the outer supporting means, and centrifugally consolidated therein after which superfluous material is removed in adjustable manner from the inner surface simultaneously along its Whole length and di verted into a collector, the formed article being then removed together with the inner configuring member.

lt will be understood that the inner mold will be shaped to suit the exterior formation of the pipe, column or the like and also that the invention can be usefully adapted to the lining of articles such as pipes with material for purposes such as the strengthening, waterproofing or finishing of the same. ln the accompanying drawings, Figure l. is a longitudinal and Fig. 2 a transverse section showing one form of centrifugal mold arrangement suitable for carrying out the process -as used for the manufacture or@ a reinforced pipe cylindrical throughout,

. Patented pnQd, lllil'f..

externally and internally. Figs. 3 and l are similar views of a modified arrangement for use in the manufacture oi a spigot and faucet pipe. Figs. 5 to 8 are diagrammatic views illustrating the manner of adjustably, -removing surface material simultaneously throughout the length of the article and collecting it, and Fig. 9-is a vievvr of the general arrangement of plant adapted for the purpose ol the invention. I v

IReferring first to Figs. l and 2, a is the bearing oitI a horizontal driving shaft provided vvith a boss or head c that is furnished With-a collar or flange ai. To this collar ai is bolted one half e of a cylindrical casin that I l has danges j enablingit to be securely olted to the anges g oit a companion casing part 7a. The inner mold comprises-a sheet of metal bent into cylindrical `form having scarfed overlapping edges at j. irlhis mold is supported Within and from the casing parts e, is, by rings le intermediate of its length yand by ring iiormers m at the ends. elhe f rings le as canfbezclearly seen 1n Fig. 2 ane each made in halves interengaging and oonnected together by pins n. The end formers m are made in separable parts in the same Way as the rings 7c. o represents a layer ont suitable agglomerate which is .iirst acted upon centrilugally, g) represents a metal reinternement which is nent added and fr rep@4 resents the subsequent layeroi agglomerato. centriiugally treated. nlille left hand' end former m is of a radial depth sucient to reduce an end wall accommodating both ayers of agglomerate but in order to per. mit of the entry of the reinforcement e into the mold the right handend former m is radially of lesser depth, having combined es Y ' therewith a supplemental ring m1 which is l xed to the former m alter the reinforcement p has been introduced and betere the inner layer r out agglomerato is formed.

ln Figs. 3 and 4; the cylindrical molde.

or Figs.. l and 2 is replaced by a mold :il

whichis shouldered at i torno a socket9v the rings lei and end formera ma, m9 being altered in dimensions to those employed in Figs.4 l and 2. ln `other respects the apparatus is the same. v

Fig. 9 shovs means according,7 to Figs. l and 2 or to Figs. and d mounted in relation to a distributing trough e, the casing c, it being suppe at one end. by a roller t. 'llie trough e is carried upon a shaft u by eccentrics e (Figs. 5 to 8) and is provided with a scraping edge to, a handled bolt c being shown as provided to engage one of the eccentrica v whereby the trough can be clamped in diderent angular positions relatively to the shaft u. 'This shaft wis fitted with a handle y and is revoluble in a sliding Vhearing-e, thearrangement being such that the shaft and trough canbe advanced longitudinally into the positions indicated in dot and dash lines where the end s1 of the shaft -s'enters a Ihousing b1 P.in the end Aof the shaft b. Normally the trough. s is clamped tothe shaft 'urso that it can he freely moved long'- tudinall into the inner mold, as exempli- 'edin ig. 5, after which it can be turned by @the ehandle y into'a'position (see Fig, 6) `to enable its, contents to be discharged. Afterward. the angular position of the trough ys in relation to the shaft u can be altered, as exemplified in 7 and -8,"to'

vary theldistance of the ydressing edgefw from the center of rotation which distance is a maximum in Fig. 8.

What we'claim is.:- l' -1. In agprocess of the kind described .for producing hollow articles the ystep of l'cen'- v trifugally smoothing the tinternal surface i' upon into the conguring member, consoliydating the same centrifugally, removing and collecting superfluous material from the intermal surface of the article along its whole length'simuitaneously, removing the configuring member with its contents Aas soon as Leaaeoe suiiciently set to permit thereof7 and allowlng the contents to set completely while remaining in the configuring member.

3. The process of manufacturing hollow articles of reinforced agglomerate which v consists in centrifugally consolidating a layer of agglomerato until partially set, in-

troducing the reinforcement, following the introduction of the reinforcement by further agglomerate --and centrifugally weonsolidating the added agglomerato upon and aroundvthe reinforcement.

4. The rocess of manufacturing hollow articles oi) reinforced agglomerate which consists in introducing agglomerato into a rotary configuring member, dressing such agglomerato interiorly to produce a layer of redetermined thickness, introducing the reinforcement, following the introduction of the reinforcement by further agglomerate and centrifugally consolidating the added agglomerato upon and around the reinforcement.

5. The process of manufacturingl -hollow Aarticles of reinforced agglomerato which consists in introducing agglomerato into a rotary configuring member, dressing such agglomerate interiorly to produce a layer of redetermined thickness, introducing the rey v 11i-forcement, following the introduction' yof the reinforcement by further agglomerate and dressing such added agglomerate iny teriorly'to produce a second layer ofvpredetermined thickness.

Signed at Rosario de Santa F, Argentina, this nineteenth day of January, 1916.

DONALD MOIR. E BUCHANAN. witness@ R. WATSON, Wm J. MARTIN. 

